Excavator



l. A. GILIVIAN.

EXCAVAT'OR; APPLlcAmN man SEPT. 4, |920. LEQSQS.

imma' July 25, 1922.

, TSHEETS-SHEET I.

DI@ COCO Elfwwwtofa I. A. GILMN.

EXCAVATOR.

APPLICATION FILED SEPT. 4, Iezo.

Patfene Juy 25, w22.

7 SHEES-SHEET 2 J. A. GILIVIAN.

EXCAVATOR.

APPLscATxoN FILED SEPT. 4. 1920.

1,4%9693. Emma July 25, 1922.

YSHEETS-SHEET 3.

1. A. GILMAN,

ExcAvAToR. -APPLICATION FILED SEPT. 4. 1920- Pmnd July 25, 1922.

7 SHEETS-SHEET 4.

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I *Y gig 'dlman a? fr A l EXCAVTOR.

APPLICATION FILED SEPT-4,1920. v op n 19424,@93., Phne Juy u? E92@ I'SI'IIEIS-SHEET 5.

,A Gil m am J. A. GILVIAN EXCAVATOR.

APPLICATION FILED SEPI. 4, 1920.

aftente J'uy 25, w22.

TSHEETS-SHEET (i.

EXCAVATOR.

APPLICATsoN man sEPT.4.192o.

Patente. July 259 1922 7sHEErs-sHEET 1.'

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JOHN A. GILMAN, or AMERICAN LAKE, WAsHme'roN.

EXCAVATOR.

realices.

Application filed September 4, 1920. Serial No. 468,202.

To (1U whom it maig/ conce/rn.'

Be it known that I, JOHN A. GILMAN, acitizen of the United States, residing at American Lake, in the county of Pierce and State of Washington, have invented new and useful Improvements in Excavators, of which the following is a specification.

This invention relates to excavating machines and it consists in the novel features hereinafter described and claimed.

An object of the invention is to provide a machine of the cha acter stated having means for breaking the soil, `soft rock or similar material and for passing the broken particles back upon a conveyor from which the material is delivered into a receptacle and from the receptacle the said material is elevated and deposited upon a second conveyor which is adapted to carry the same to one side of the trench and depositit upon the surface. of the ground.

lVith this object in view the excavator comprises a wheel mounted frame with a motor for propelling the-same. A steering device is providcd for guiding the wheel to which the propelling power from the motor is applied.

The machine is provided at its forward end with a cutting or disintegrating device adapted to be adjusted vertically and which includes picks or tools adapted to engage the solid material and break the saine into particles which are carried back and deposited upon the first mentionedvx conveyor. Means are provided for operating the said conveyor from the motor and other means are provided for operating the elevator from the motor. T he second mentioned conveyor is operated from means which are included in the elevator operating means.

Inthe accompanying drawings Figure l s a side elevation of the forward portion of the excavator.

Figure 2 is a similar view of the rear portion of the same.

Figure 3 is a detail side elevation of a rear portion of the excavator with partsin section.

l`igure 4 is a plan view ofthe rear portion of the excavator with parts broken away and parts in section.

Figure 5 is a plan view of the forward portion of the excavator with parts broken away and parts in section.

Figure 6 isa-tra.-nsverse sectional View through the forward portion of the excavator.

Figure 7 is a transverse sectional View through the steering wheel of the excavator.

Figure 8 is a plan view of the forward portion of the excavator.

Figure 9 is a similarview of the rear portion of the excavator.

Figure 10 is an elevation of the rear por.- tiony of the excavator.

Figure 11 is a horizontal sectional View through an elevating and levelling mechan ism used upon the machine.

Figure 12 is a perspective View of a pick arm used on the excavating machine.

The excavator comprises a frame 1 of metal and of any suitable design and which is provided at its forward end with downwardly' and forwardly inclined brackets 2. The brackets 2 are mountedupon a cross bar 3 which is mounted for sliding movement transversely of the frame. Means hereinafter described is provided for sliding the said bar with relation to the frame. A shaft +L is journaled for rotation at the forward portions of the brackets 2 and carries a series of radially disposed arms 5. A worm wheel 6 is fixed to the shaft et and a worm 7 meshes with the said worm Wheel. worm 7 is carried by a shaft section 8 best shown in Figure 1 of the drawings. talfs 9 are pivotally connected at the o`uter ends of the arms 5 and the said staff-s carry at their outerl ends picks 1() of suitable pattern. Brackets 11 are mounted for vertical adjustment at the-forward portion of the frame 1 and wheels 1Q are journaled in the lower portions of the said brackets 11. The brackets 11 may be adjusted vertically with relation to the frame 1 by means of screws 13 which are provided at their upper ends with hand wheels 14. Guides 15 are mounted at the forward portion of the frame 1 and arcuate members 16 are slidably mounted in the guides 15 and provided at the Iupper portions of their rear edges with teeth 17. The upper parts of the members 16 are guided in arms 18 which are carried by standards 19 mounted on the forward The llhe 2l is connected with o. sin

-lv'l through the arms 18 und 'he trench wide portion of lle freine l, and. vf h serve in purl; 'ienne for guiding he verical movement of? b fles .ll hereinhe'lore described. ruper '22() is carried oy rho :u'euui'te menihers .i6 und nuiy he,V raised und lowered with lle suine. Defeetor plzies 2l, und i225 are iilierposed between the scraper 2() und the freine i und indy move 'with releion io euch other whereby the liracles f2 muy move transversely oi the freine .ionary par@ oi the zippurimus, plue is conneeed with rho sere er i3() while the cenrzil ulee 5 l r i 2 .is loos u arranged so that i:he pluies een have gliding,T movenienlion each einer to per- .nii movement ol" he scraper. A shsait 2li is journriled upon ihe 'freine l und carries geur wheels Vi which mesh with the teeth .i7 of ille urcuee members 1G.

Il; is apparent. that. when the shuf- Q4. is i-(rfied he `rear wheels which :ire .in mesh with the teeh 17 move the arcuate members their connections with. i'he freine l whereby the scraper 2O is raised und lovveren` und inasmuch as he deiieeiors 2l, 252, and floverlep euch oher niove with relation to euch other to pernii of die vertical udjustmem of the scraper.

An enffine QU is mounted upon the 'frame i und iis shu is provided with n geur 28 which enemies an idle wheel 29 which in In z nun e igee :i pinion 29 mounted on u shall( 30 jor. upon the freine l. Ab its 'orvmrd end le heft 30 is connected ly means oi? o. universal joint` 3lv with si stub C ifi; 32 which is' siidzihly received in a 34. connected by means of u. universal joint 33 with lie shaft seciion l. Consequ ntly iy will he seen that means are provided for reiniging the shaft Ll 'from the.. shaft of the. engine o cause the picks lO to nov-e shone the eurh is the machine moves along: n irenoh or excevuion. Shaft. 2T also connect/ml. by worin gears to u shaft 2T. und this shaft connected by worm gears to n crunk of which is coni'fou'. seid l `r will he. 2given its irons nl; when Jhe engine is l. will il'iue he seen that ihe '.lies vili he reeipromdved transverselgjvf iielre are heilig riunied so :is fo cause meins o ege :ill parts of ehe ronli We of the trench heinodugf und ihis trains verse movement fill cause the picks to niuke enough to provide :imple room for the apparatus. T his movement also permits 'the pick currying members to he spaced apart reteh o wail. considerzdfly wider sind` s on or 'lne l nelod l the exis of the shaft; 4 and en' i. linlivl Willi si puri oii the eross us each piel( will operaie.

irins 3T 'pivoolly connected with `he said nuns curry u roller which is loont/eil. behind the. .sers-per 20. heit 59 is tre-ined around the rollers 36 and and a. tensioning device is mounted upon lie arms Il? and engages he lower run of the belt 3S) o maintain the upper run thereof nl; u proper degree of' tension. A pulley 41 is mounted upon he shaft elfi of the roller ESG and a pulley-42 is driven from the shaft B0.- A belt,l trained :iroiuulthe pulleys l und .12 und is ,adapted to transmit ro-ury moveineni' from the engine lo the shaft of Jdie roller Slo. .ulley carried by u sha-ft 42 which is connected by ihe worin gear 2 with Jelle shelf-*c JEU. (.onsefpiently inenns ere provided Afor moving he belt 39 longitudinzilly. Vzheu the materiel is dug and cust up by the scraper 20 and directed by the delee-or plates 2l, und 23 upon the upper run of the h-elt 39 the. Suid upper runmov- .ing in un upward direction carries the inaterizil up toward the rear end oi' Jthe iframe l and eonsitues' the prinniry conveyor of thel machine..

A receptacle le. mediate poriiou of ed to receive the is hungr under the 'interthe inline l and is adaptnuiteriul from the upper runof die belt 39.' Standards are mounted upon the inerniediue portion of the frame l. and cross huis i6 connect the stench zii-ds 45 at the suine side or" the'muchine to* gether.

A shult 4.7 is iournuled helow the frame il at u point heilvveen the ends of the reeeptucle del und carries sl'zrocke; wheels 4&3. Chains il are trained around the wheels 48 and also around wheels mounted upon u` shaft "51 which journuled upon the hars 46. Buckets 52 are carried hy the chains 49 und are adapted to receive the materiel which is deposied in the reeeptucle i4 und elevate. the

saune, and curry it over the slm l't 51. hev- .eled geur wheel 53 u: fixed to the side of one in unison wih'he suine, und the said 'e carries lleveled pin 5T which ure eduped to he. moved in engouement, ai @'lil'erent iines with che teeth of die wheel 5i beveled `Wheel 58 is fixed llo ghe forward end of the simil; 5 sndnieshes with i1. heveied pinion 59 mounted et the upper end of :L vevrieelly disposed shsf; (50. A beveled pinion 6l is carried at the lower end or' the shaft 60 and with a4 similar pinion 62 mounbe on ashzal, which carries :it forward endy wheel G4 which meshes willi a. wir wlieei mongned on he shaft, 30 as hei, showin in Figure 9 of the c'rawing.

Conseipzenly .ineens ere .oroif'iolod ill) manege y tating the shaft 63 from the shaft of the engine 26 and by the intermeshing pinions 62 and 61 the shaft`60 isv rotated and through 'the intermeshing parts 59 and 58 the shaft 54 is rotated and inasmuch as one of the pinions 57 is in engagement with the gear wheel 53 the shaft 51 is rotated and consequently the chains 49 and buckets 52 are moved about the wheels 48 and 53. A bell crank lever 66 is pivoted upon one of the bars 46nand engages the inner sleeve'56. A bell crank lever 67 is pivoted upon the rear standards '45 and the said bell crank levers are' connected together by'means of. a rod 68. A rod' 69 is connected at its rear end' with the lower arm of the bell crank lever 67 vand the forward portion of the rod 69 is may be brought BO mesh with the teeth of .the Wheel 53.

The shaft 63 hereinbefore described isconnected with a shaft 71 by meansof auniversal joint 722 A spindle 73 is jour! naled for rotation at the rear portion of the frame 1 and carries at its upper end a .l et

gear wheel-74. The spindle 73 carries at its lower end a bracket 75 in which a Wheel 7 6' is journaled. The said wheel 76 is adapted Ato travel along the bottom of the trench or 'excavation which is opened up by the machine. A beveled gear wheel 77 is journaled to the upper portion of the spindle 73 and is connected with a frame 78 which -in turn is provided with an anti-friction bearing 79 in the form of balls as lshown in Figure 4 which are interposed between the said frame 78 and `the frame 1. A shaft 80 is journaled in the frame 78 and carries at its lower end a beveled pinion 81 which p meshes with a similar pinion 82 attached to the uplper portion of the shaft 80 and a simi1 -lar w the axis of thewheel 76 hereinbefore de-v scribed. A sprocket wheel 83 is carried atA eel 84 is fixed to the wheel 77 herein# before described. A sprocket chain 85 is trained 'around the wheels 84 and 83` and is adapted to transmit rotary movement from the wheels 77 to the wheel 76. In view lof the fact that the-wheel 76 is the steering .95 wheel 74 tothe `spindle 73 and. consequently the wheel y76 is steered. The shaft 86 is connected by means of a universal joint 88 WithY a Shaft 89 which is journaled at the side of the frame 1 and the forward end of the shaft 89 is operatively connected with a steering device y90 best shownin .Figure 8 of the drawing. y

A shaft 91 is journaledfor rotation at the rear portion of the frame 1 and is opera-- tively connected with the shaftv71 by intermeshing beveled pinions 92 and 93 shown in Figure 4 of the drawing. The shaft 91 carries at its rear end a friction disk 94 and a disk 95 is arranged to move across the face of the disk 94. The disk 95 is slidably mounted upon a shaft 96 which is journaled upon the rear portion of the frame. A lever 97 is connected with the disk 95 and a rod 98 is connected at its rear end with the said lever 97. The forward end of the rod 98 is operative-ly connected with a lever 99 which may be'swung vfor moving the rod 98 longitudinally. As the said rod 98 is moved the lever 97 is swung whereby the disk 95 is carried across the face of the disk 94 and the motion which is transmitted fromt'he shaft 91 to the shaft 96 may be increased or diminished or reversed according to the side ofthe axis'of. the shaft -91 at which the disk 95 lisv positioned. A gear wheel 100 is carried by the shaft 96 and meshes with a gear wheel 10 1 mounted on a stub shaft 102 journ'aled upon the rear portion of the frame 1. A beveled gear 103 is mounted upon the stub shaft 102 and meshes with a similar gear wheel 104 loose ly mounted upon a shaft 105 journaled at the rear portion of the frame 1. A gear Wheel 106 is fixed upon the -shaft 105 and meshes with the teeth of the wheel 77 hereinbefore described. A clutch member 107 is slidably mounted upon the shaft 105 and may be moved into engagement with the hub of the wheel 106 to fix the said wheel 106 with-relation to the shaft 105. A bell crank lever 108 is mounted upon the rear portioxr.ofthe'frame 1 and one arm of the said lever 108 is operatively connected by means of a link 109 with the clutch membri` 107. A rod 110 is connected at its rear end with the bell crank lever 108 and the forward end of the rod 110 .is connected with a lever 111 pivoted at the forward portion of the frame 1. Consequently it Swill be seen that when the lever 111 is swung to move the rod-110 longitudinally the bell crank 108 is swung whereby the clutch member 107 is moved into or out ofengagement with the hub `of the Wheel 106. When the said clutch member is in engagement withthe hub of the wheel 106 rotary movement is transmitted from the shaft 91 through the friction disks. 94, 95, shaft 96, intermeshing gear wheels 100 and'101 andthe wheels 103 and 104 to the shaft 105 and the wheel 'inasmuch as the wheel 'TT 'is operatively connected with the shaft 8U which in turn is operativel)v connected with the axis oi the steering wheel the said steeringA wheel is propelled irrespective of the direction in which it may he disposed Vt'or guiding?r the movement of the machine.

As the machine cuts an excavation or a trench the material is cI )rated as hereinhelorc described and deposited upon a con- Iwor 112 located at the rear portion ot' thel frane 1. This conveyor is operative-ly connected by means-of a chain 113 with the shaft 51S: hercinliiet'ore described and there fore the material which is deposited upon the conveyor 112 is carried to one side or the other of the excavations and deposited upon the surface ot the ground.

From. the foregoing description taken iny conpmction with the accompanying drawingy it will he seen that an excavator ot' simple and durable structure is provided and that. the saine includes means `lor shitting the cuttinpr devices transversely with rela-- tion to the trame ot' the machine, also means 'tor raising and lowering the forward portion of the :trame of the machine with relation to the cutting devices. also means for carrvingr the excavated material rearwardly and clcvatingr `thc same and depositing' it upon a conveyor adapted to carry the ina-- teria] hcyond the side ot the trench or cX- cavation and deposit the same at the. surlace oi' thc lground or in wagons: Furthermore thc machine includes means Ytor steering the dirigihle wheel which supports the rear portion thereof and consequently the machine may he used in places where. space is limited and where it is desired to accurately direct the machine during the course ot' cutting an excavation or trench.

Having' lcscrihcd the invention what is claimed isz- 1. An excavator comprising a supporting l traine, a bracket mounted upon the frame, means 'for worin-g the bracket transversel)7 ot' the. traine, a plurality ot' sots ot cutters carried by the bracket, the sets heilig spaced apart and means t'or operating the cutters.

2. n excavator con'iprising a wheel mounted tramo, a bracket mounted lior movement transversely oii'the trame, means 'for movingthc bracket, cutters carried h v the hraclmt, means mounted upon the frame lor operating the cutters, and means 'for 'raising and lowerin thc iorward portion ol' thc trame with relation to the cutters.

S. n excavator comprisindr :i wheel mounted i'ramc. lirackets mounted upon the trame, means Vtor movin;Y the lirackcts transvcr-sel)v of the iramc, cutters carried hy the hrackcts, means mounted upon the trame for operatingv thc cutters, means .for raising' and lowering;` thc lorward portion otE thc frame with relation lo thc cutters and dclicetor plates connected with the lirackcts and Vlramc and movable with relation to each other.

-l. An excavating machine comprising a whcel mounted lranic. means carried at the t'orward portion ot thc l'raine `i'or cutting material and tor casting' thc same rcarwai lv. a conveyor adapted .to receive the said material, an elevator adapted to receive the material trom the conveyor.'means mounted upon the trame t'or operatingy the cutters, convevor and elevator, and a second conveyor adapted to receive thc material from the elevator and adapted to swing with re-k lation to the same to deposit the imiterial at the snrtace oi' the `ground licyond either side o'l the machine.

o. :in excavator comprisinga wheeled trame, a bracket mounted upon the trame,

means tor moving the bracket transversely or' the trame, a sha tt carried hj.' the hrackct, means tor rotating the saine, a plurality of sets ot arms connected with the shaft, said sets heilig spaced apart and picks led h v the arms.

G, An excavator comprising a Wheeled trame. a bracket mounted upon the fran/ie, means for moving the bracket transversely of the trame, a shaft larried by the bracket, means Jfor rotating the same, a plurality ot' sets of arms connected with the shaft, said sets being spaced apart, picks carried by the arms, said picks being pivotally connected with the arms.

7. An excavator comprising a, wheeled frame. a bracketmonnted thereon, means i'or moving' the liracket transversely of the trame, a plurality ot cutters carried by the bracket, means t'or actuating the cutters, a,

scraper associer l th cotte means ior'ailiusrin the scraper v in testimony where l alf'. 

